I see that the "Causes of Economic Recession" page was updated on 28 December 2016. Where it formerly said Economic recessions are caused by a decline in GDP growth, it now reads Please note: a decline in GDP growth is a sign that a recession may be underway, but it is rarely a cause.

That is an improvement. But here is the revised paragraph in toto:Please note: a decline in GDP growth is a sign that a recession may be underway, but it is rarely a cause. That's because GDP is only reported on after the quarter is over. By the time GDP has turned negative, the recession may already be underway.